NO.8 SPEECH RECOGNITION DOES NOT START [CAR-NAVIGATION
SYSTEM]
TROUBLESHOOTING CHART
DIAGNOSTIC PROCEDURE
DIAGNOSTIC PROCEDURE
5
{
Terminal A (4-pin, POWER)-terminal A (4-
pin, POWER)
{
Terminal B (4-pin, P-GND)-terminal B (4-
pin, P-GND)
{
Terminal C (4-pin, V-GND)-terminal D (4-
pin, V-GND)
{
Terminal D (4-pin, COMPOSITE)-terminal
C (4-pin, COMPOSITE)
z
Is there open or short circuit?
No
Inspect the suspect wiring harness.
Repair or replace if necessary.
6
z
Turn the ignition switch to the LOCK position.
z
Remove the audio unit.
z
Disconnect the audio unit connector (24-pin).
z
Turn the ignition switch to ON.
z
Shift the selector lever in R range.
z
Inspect the voltage between the rear view monitor
control module terminals M (24-pin, REV) and W
(24-pin, GND).
z
Is the voltage B+?
Yes
Replace the back camera, then
inspect generating of malfunction
symptom.
Even if it exchanges back camera,
when a fault phenomenon occurs:
z
Replace the audio unit.
z
Reinspect the malfunction
symptom, then repeat from
Step 1 if malfunction recurs.
No
Inspect the suspect wiring harness
(reverse signal). Repair or replace if
necessary.
8
Speech recognition does not start
POSSIBLE
CAUSE
z
Microphone malfunction
z
Car-navigation unit malfunction
z
Audio control switch malfunction
z
Poor connection of audio unit connector, terminal damage
z
Poor connection of car-navigation unit connector, terminal damage
z
Open or short circuit in wiring harness between audio unit and car-navigation
unit
STEP
INSPECTION
ACTION
z
Turn the ignition switch to the ACC position.
Yes Go to the next step.
2008 Mazda CX-9 Grand Touring
2008 BODY & ACCESSORIES Symptom Troubleshooting (Car Navigation System) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:40:44 AM
Page 17
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